No disappointments at all, and if I might be so bold, I'd say that anyone who is already disappointed with the tiny little bit of hard information we actually got is bringing most of it on themselves. The deluge of speculation, cheers and complaints here and elsewhere notwithstanding, we actually weren't given enough real information to make any sort of valid assessments, positive or negative. At this point, it's almost all guesswork, and basing disappointment (or praise, for that matter) on mostly guesswork doesn't even make sense.
Presuming no unpleasant surprises, the only thing I'm concerned about is the switch to 3D, and I was already concerned about that when I was just presuming that that was the way the next gen was going to go. I want pokemon who are interesting and compelling and attractive (or disturbing or frightening or adorable or whatever, as the case might be) and I couldn't care less if they're rendered as sprites or meshes. I'm concerned because it's often the case, and self-evidently with past Pokemon games, that 3D meshes are not interesting and compelling and whatever - they're just distractingly poor 3D meshes. They don't look like pokemon - they look like 3D meshes. For that, I'd rather have sprites - 2D or not, at least they actually look like pokemon rather than looking like something somebody cobbled together after watching half of a Blender tutorial.
That said, the pokemon models in the teaser we saw were pretty good, though the overworld player model was only so-so. But it's significant (and generally ignored) that the teaser said repeatedly that that was NOT actual gameplay, so we won't really know until we see actual in-game footage. So, in my opinion, it's too soon for disappointment or relief, but at the moment, that's my only concern.
